devital tooth

例句：

1. 1. The dentist advised her to remove the devital tooth before it could cause further damage.
   牙医建议她拔掉这颗死牙，以免造成进一步的伤害。
2. 2.The patient's mouth was sore and swollen due to a devital tooth infection.
   患者因为一颗死牙感染而口腔疼痛肿胀。
3. 3.After undergoing root canal treatment, the patient had to have his devital tooth extracted.
   经过根管治疗后，患者不得不拔除他的死牙。